/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.curator.x.rpc.idl.discovery;
import com.facebook.swift.service.ThriftMethod;
import com.facebook.swift.service.ThriftService;
import com.google.common.base.Function;
import com.google.common.collect.Collections2;
import com.google.common.collect.Lists;
import org.apache.curator.x.discovery.ServiceDiscovery;
import org.apache.curator.x.discovery.ServiceInstance;
import org.apache.curator.x.rpc.connections.ConnectionManager;
import org.apache.curator.x.rpc.connections.CuratorEntry;
import org.apache.curator.x.rpc.idl.exceptions.RpcException;
import org.apache.curator.x.rpc.idl.structs.CuratorProjection;
import java.util.Collection;
@ThriftService
public class DiscoveryServiceLowLevel
{
private final ConnectionManager connectionManager;
public DiscoveryServiceLowLevel(ConnectionManager connectionManager)
{
this.connectionManager = connectionManager;
}
@ThriftMethod
public void registerInstance(CuratorProjection projection, DiscoveryProjection discoveryProjection, DiscoveryInstance instance) throws RpcException
{
try
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
serviceDiscovery.registerService(instance.toReal());
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
@ThriftMethod
public void updateInstance(CuratorProjection projection, DiscoveryProjection discoveryProjection, DiscoveryInstance instance) throws RpcException
{
try
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
serviceDiscovery.updateService(instance.toReal());
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
@ThriftMethod
public void unregisterInstance(CuratorProjection projection, DiscoveryProjection discoveryProjection, DiscoveryInstance instance) throws RpcException
{
try
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
serviceDiscovery.unregisterService(instance.toReal());
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
@ThriftMethod
public Collection<String> queryForNames(CuratorProjection projection, DiscoveryProjection discoveryProjection) throws RpcException
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
try
{
return serviceDiscovery.queryForNames();
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
@ThriftMethod
public DiscoveryInstance queryForInstance(CuratorProjection projection, DiscoveryProjection discoveryProjection, String name, String id) throws RpcException
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
try
{
return new DiscoveryInstance(serviceDiscovery.queryForInstance(name, id));
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
@ThriftMethod
public Collection<DiscoveryInstance> queryForInstances(CuratorProjection projection, DiscoveryProjection discoveryProjection, String name) throws RpcException
{
CuratorEntry entry = CuratorEntry.mustGetEntry(connectionManager, projection);
@SuppressWarnings("unchecked")
ServiceDiscovery<byte[]> serviceDiscovery = CuratorEntry.mustGetThing(entry, discoveryProjection.id, ServiceDiscovery.class);
try
{
Collection<ServiceInstance<byte[]>> instances = serviceDiscovery.queryForInstances(name);
Collection<DiscoveryInstance> transformed = Collections2.transform
(
instances,
new Function<ServiceInstance<byte[]>, DiscoveryInstance>()
{
@Override
public DiscoveryInstance apply(ServiceInstance<byte[]> instance)
{
return new DiscoveryInstance(instance);
}
}
);
return Lists.newArrayList(transformed);
}
catch ( Exception e )
{
throw new RpcException(e);
}
}
}